Calderys is the world leader in refractory concrete. Calderys supplies first class refractory products produced in its 17 production plants located in 15 different countries. In addition to supplying materials, we also provide drawing and design work, installation, maintenance and repair service. The extensive and highly performing Calderys product line is the result of innovative designs, technical expertise and more than 60 years of experience in refractory. Calderys is a reliable, innovative refractory supplier of materials and complete concepts that provides you with consistent quality and a performance you can build on.